Wow, great information with lots of good pictures. I actually have a
pop-top and roof (from an 85 Westy) with all necessary parts to do
this conversion, but have canceled the project. The roof was removed
by cutting it off at the pillars, so the conversion can be correctly
done. This is now for sale (in Durango, Colorado,) if anyone is all
hot and bothered by the prospect.
Had I wanted to go through with it, it would have been me posting for this info.

Gracias,
 Miguel